Galveet b



2 Sheets-Sheet 1.

0'. BY. GOTTRELL;

MACHINE FOR DRESSING PRINTERS GHASES.

(No Model.)

Pate nted Jan. 10,1882.

N. PETERS, Piwm-Lmwgnphw, Wuhingium ac.

{No Model.) 2 Sheets-Sheet 2.

C. B. OOTTRELL.

, MACHINE FOR DRESSING PRINTERS GHASES. No. 252,290. Patented Jan. 10,1882.

N. PETERS. Pholmmbogrzphur. Washin ton. v .0

- STATES;

PATENT. OFFICE.

MACH-INEQ'FOR DRESSING PRINTEI'RS CHASES.

SPECIFICATION forming part of Letters Patent No. 252,290, dated January 10, 1882.

Application filed April 14, 1881. (No model.)

To all whom it ,mayjconcem Beit known that I, CALVERT B. OoTTRELL, of Westerly, Washington c'ounty,State of Rhode Island, have invented new and useful Improvements in a 'Machine for Dressing PrintersGhases,of which. the following is a specification;

This invention has for'its object'the dressing of the outer and inner edges of the metalframes'for'holding-forms of type, and known as printers chases; "and the invention consists, first, in combining a pair of cutters or milling-tools-with a supporting and moving bed and suitable operatingmechanism in such a mannerxthat the outer andinner edges of one side orend of the chase-frame and twoadjacent inner corners or angles tliereof will be completely dressed 'or finished, ready for use, and automatically, as will hereinafter appear; and,

second, the invention also consists in combining a secondpair of cutters with a supporting and moving bed working simultaneously with the firstpair of cutters; and their supporting bed in-such a manner-that an opposite side or end'of the chase-frame and two of its adjacent inner cornerswill be completely finished simultaneously with the fir'stside, aswill hereinafter appear. d d r The invention furtheraconsists in combining two support-in g-b'eds upon a main frame for supportingthechase-framesat'their opposite sides, and having'oneofthe-said bedsa'djus'table relative tothe other'to adapt them to the sizes of the work, as willhereinafterappear.

In the drawings, Figure 1, Sheet 1, is a side elevation of the-machine:

Fig. 2, Sheet 2, is a planofthe same.

AtA is a frame similar in shape to a lathe on the inner end ofthe saidshaft Cone of the" cutters or millihg-toolsis mounted, as atE, and i it is simply a plain disk, with the cutting-teeth on the circumference made of any'suitable or of one of the-many well-'knownforms for such tools. Underneath said cutteris a bed or plate,

as at F,for supporting one side or end of the chase-frame,andwhich ought, therefore, to be as lon gas said frame, but maybe quite narrow, as represented, and this bed is mounted to Work transversely mat a right angle tothe axisof the cutter at E, and consequently is at a right angle to the'main frame A, and it is arranged to'slide on a guide at G, which is fastened upon the main frame,'and has V-shaped edges at.

G to engage in corresponding grooves in the under side of the bed, one of which is provided.

with a gib at G and set-screws at G as in the well-known form of arranging sliding or moving beds on various machines. Said bed is ar-' ranged to move to and fro by a spur-pinionat H gearing into a rack on the under side ofthe bed, as at H, and the pinion is on a shaft at H, (shown in dotted lines in Fig. 1,) and which is located under the bed and extends toward the opposite end of the frame to operate another bed of the same construction at K, which is a duplicate of the first, and is provided with lever at L ,which will be hereinafter explained.

The shaft at'L receives its motion from the main 'shaftfat 0 through intermediate'gearwheels at M, M, M and M in the same manneras the gear-wheels on an engine-lathe, and therefore need not be any further explained, as it'is very evident that by such an arrangement the two beds willbe moved to and fro by such a mechanism when it is set in motion.

A tail-stock, as at N, somewhat like a tailstoek on a lathe,is mountedon theframe, and it supportsa cutter-shaft, as at 'N, in suitable bearings; and upon its inner end is a cutter, as at N similar to the one at E, andfsaid cutter or inilling-toolreceives its motion from ashaft at 0', whichis mounted in hearings in the upperportions of the head and tail stocks, and which is provided with spur-wheels at 0 and O gearing into wheels on the shafts O and N, and thus the shaft in the tail-stock is driven IOO These cutters, as thus described, are for dressing the outside or outer edges of the frames, and therefore the cuttcrsand the tail-stock at that end of the machine are both capable of being moved toward and from the head-stock on the main frame A ,in the same manner as the tool-rest and tail-stock of a lathe, to adaptthem to the sizes of the forms. Consequently, if a chase-frame or a number of them of the same size be clamped or fastened upon the beds, as

represented at P in Fig. 2, and the machine be i have a false frame of the proper size to hold the chase-frames and fasten it upon the beds, so that the cutters can work into it or past it without cutting into the beds; but to dress the inner edges of the frames, and also their corners, supplementary cutters, as at R and R, are provided to co-operate with those already described. These supplementary cutters are mounted on shafts or axes in the lower ends of vertical guides, as at S and S, that work up and down in V-shaped bearings in brackets, as at T and T, that are cast upon the head and tail stocks, as showmand they are provided with gibs and set-screws to make them work accurately; and said cutters are rotated by miterwheels, as at T T T and T which engage with the same shaft, 0, that drives the shaft N in the tail-stock. .These guides S and S are operated by vertical screws in the upper ends of the guides, as at U and U, and upon the upper ends of the screws are bevel-pinions, that gear into wheels at U and U on a shaft, U above themachine, which is provided at one end with a. crank and hand wheel,

as at U, so that the said cutters may be raised and lowered by hand; but said shaft is also provided with a bevel-pinion at V, to engage with a wheel at V on a vertical shaft at V on the lower endof which is a pinion, that engages with another pinion, V on the shaft L and which may receive motion from the clutch at L when the lever at L is moved to connect them. This clutch lever may be operated in various ways-as, for example, a shipping-guide may be fastened upon the edge of the bed F, as at W, so that after the bed has traveled far enough to allow the supplementary cutters to descend into the interior of the frames to dress the inner corners said guide W, will draw the top of the lever over toward the bed and move the clutch into contact with the gearing that operates the screws, as described, to lower the said cutters toward the frames, and after they have descended sufficiently far to dress the corners, which will be to the extent of carrying the axes of the cutters below the lowest frame, or, at least onehalf of the cutters below the surface of the beds, then another stop on the guide at W, next to the head-stock, will trip the bell-crank lever X, and thereby release the clutch-lever L when the spring at W will, as the guide descends, throw it over to start the movement of the beds endwise, and thus dress the inner and outer edges of the frames at the same time; and when the inner cutters have reached the opposite corners, then another shipping device, as at W?, throws the clutch-lever over, and by reversing the feed-gear on the main shaft at (J the screwswill be reversed and the supplementary cutters will rise to dress out the corners on thatside of the frames after the beds are again started to permit the outside cutters to finish the remaining portions of the outsides or edges of the frames. By such a combination of mechanism two opposite sides and the adjacent corners to one side ofone or morechases may be dressed simultaneously and automatically; but it is evident that the bed and the tail-stock cutter, and also the supplementary cutter at that end ofthe machine, with'their operating mechanisms, may be dispensed with, and a single pair of cutters, as shown at the head-stock, may be used to dress a single side or end of a chase by substantially the same operating devices as hereinbefore described, and as represented in the drawings 5' but in so doing a proportionally less amount of work will be accomplished, and, besides, a greater number of changes or shiftings ofthe chase upon the beds will be required, and hence a greater dangerof inaccurate work;butwith careasingle pair of cutters and a single bed perform excellent work. Consequently I claim- 1. In a machine for dressing printers chases, the combination of a pair of cutters or millingtools, one of which is arranged to move up and down, with a supporting and reciprocating bed and suitablyoperating mechanism, whereby the outer and inner edges of a chase-frame and the adjacent inner corners may be completely finished, as hereinbefore set forth.

2. In a machine for dressingprinters chases, the combination of two pairs of cutters, one of each pair of which is arranged to'move up and down, and their supporting mechanisms, whereby two opposite sides of a chase-frame and their adjacent inner corners may be completelydressed or'finished, as hereinb'efore set forth. V

3. The combination of two supporting and moving beds, arranged transverselyi to the main frame and adapted to. be adjusted relatively to each other for receiving the various sizes of work, as hereinbefore set forth.

. 4. The combination of the double clutchand meV IIO

its lever with the shifting devices on the supporting-bed and on the guide Of the supplementary cutter, to trip said clutch to and fro for varying themovements 0f the bed'aud the 5 supplementary cutter or cutters, as herei before set forth.

In witness whereof I have hereunto set my hand and affixed my seal in the presence of two subscribing witnesses.

CALVERT B. GOTTRELL. Witnesses:

EUGENE NHELIOT,

E. H. OOTTRELL. 

